(U//FOUO) Tactics used by violent Anti-fascists at events in Berkeley on 1 February, 4 March, and 15 April 2017 highlight their ability to exploit peaceful protests with coordinated violent demonstrations, attack law enforcement personnel, destroy property, and conduct information campaigns to advance their socio-political goals. This Advisory Bulletin is intended to inform law enforcement involved in operational planning and event safety at gatherings that violent anti-fascist elements may target.

(U) Identified Tactics
(U//FOUO) We assess that violent Anti-fascists (Antifa), including anarchist extremists, are likely to coordinate and drill tactics for use at organized events in the San Francisco Bay Area. Recently observed tactics suggest that some violent anti-fascists may have had access to limited military style training or knowledge, possibly from publicly accessible guerrilla warfare manuals, books, and online media content. Tactics witnessed at riots in Berkeley in 2017 include:

•(U//FOUO) “Black Blocs”: Violent anti-fascists have participated in “Black Blocs” where participants dress uniformly in black clothing including black ski masks and black scarves. Uniformity aids in the concealment of participants’ identities to evade arrest. They carry backpacks to conceal weapons, carry a change of clothes, and first aid supplies along with other provisions.

•(U//FOUO) Area Denial: Violent anti-fascists have been observed gathering local materials to construct traffic obstacles. They have constructed roadblocks from road-improvement site materials,dumpsters, trash cans, cinder blocks and other unsecured materials including garbage. Violent anti-fascists occasionally set these materials on fire to divert first responder resources. Roadblocks deny access to first-responders by preventing traffic movement, further tying up resources.

•(U//FOUO) Human Shields: Violent anti-fascists at the 1 February event at UC Berkeley limited law enforcement response options by intermingling with crowds of peaceful protestors.

•(U//FOUO) Element of Surprise: Violent anti-fascists have avoided early detection at some events by assembling off-site before moving to a given venue, taking responding authorities by surprise.

•(U//FOUO) Reconnaissance & Surveillance: Violent Anti-fascists appear to have used reconnaissance and surveillance to gain knowledge about event security gaps and infiltration opportunities.

•(U//FOUO) Communication: Violent anti-fascists have used multiple, overlapping communication platforms including megaphones, phone apps such as Signal, rally markers such as flags, and command and response words to continue to coordinate their actions if one communication method is compromised or fails.